The word subcommittees is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 26
Highest Scoring Words With Friends™ Plays In The Letters subcommittees
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Seven Letter Word Alert: (46 words)
becomes, bemuses, besmuts, betimes, biotest, bisects, bitsets, bummest, busiest, butties, cesiums, coesite, combust, commits, commute, cosiest, cosmism, costume, cubisms, cubists, customs, emetics, itemset, meioses, memetic, miscues, miscuts, mitoses, oecists, osmiums, outbets, outsees, outsets, outsits, sitcoms, somites, stomies, subitem, submits, subsect, subsite, subtest, summits, timeout, tumesce, utmosts